Gas burner



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Patented 1, 1935 UNITED STATES PATENT OFFICE GAS BURNER IllinoisApplication June 21, 1934, semi No. 731,690

4 Claims. (Cl. 156-116) The present invention relates to burners for gasstoves, ranges, and the like, having reference more particularly toburners ofthe annular type.

A known burner of this type, on which the present improvements arebased, consists of a hollow annular body member open at its top .t-ndformed with an outer wall having a downwardly flaring smooth outersurface, and a cover plate seated on the outer and inner walls of thebody member and detachably secured in place by a central screw, theunder side of tl-e outer portion of the cover plate, which has a taperedseat on the outer peripheral wall of the body member, being radiallychanneled to form a ring of upwardly and outwardly inclined jet ducts.

It is well known by the manufacturers of gas burners that, in order toinsure a pure, blue Bunsen flame, an adequate supply of so-calledsecondary air must be supplied to 'the flame practically at the base ofthe flame, the upward flow of the secondary air being induced by theheated; air above the burner. And the best results are securedwhere thestream of secondary air is made to impinge on the flame at a more orless acute angle to the latter.

It is the object of the present invention to improve and make moreefllcient burners of,the type above described, and this is done by anovel construction by which the flow of secondary air to the flame jets,when the burner is lighted, is greater in volume and more efflcientlyapplied.

In the accompanying drawing I have illustrated one practical physicalembodiment of the principle of the invention, and referring thereto Fig.1 is a top plan view.

Fig. 2 is a side elevation of the burner proper.

Fig. 3 is a central vertical section through the burner, taken on theline 3-3 of Fig. 1.

Referring to the drawing, 10 designates as an entirety a hollow annularbody member open at its top, the outer and inner peripheral walls 11 and12 of which terminate in inclined seats 13 and 14 respectively thatreceive a tapered cover plate 15. The body and cover plate are united bya screw 16 that enters a tapered hole 17 in a bridge bar 18 spanning thecentral hole of the body 10 and is equipped on its upper end with a winghandle 19. Integral with or secured to the bochr 10 is the usual mixingtube 20 which supplies the gas and primaryair to the burner, the tubebeing equipped at its outer end with the. usual gas cock and airregulating valve (not shown).

The: under side of the outerportion-of the cover plate 15 which occupiesthe seat 13 is formed with a ring of radial grooves or channels 21 thatform upwardly and outwardly inclined jet ducts at the top of the outerperiphery of the burner. It will be observed that the outer peripheralwall 11 has an upwardly flared outer surface, and this surface is formedwith a ring of flutes 22 that at their upper ends 10 meet and merge intothe outer ends 01' the jet ducts 21 at an acute angle to the latter.Preferably and as shown each flute is wide enough to span two or threejet ducts.

By reason of this construction, the secondary air, as it rises, hugs theflutes and consequently impinges on the flame jets at their bases at anacute angle thereto, thus preventing any yellow streaks in the flamesdue to incomplete combustion of the gas, and creating a pure, blueBunsen flame of intense heat.

Specific details of the structure herein shown and described may bevaried within the principle of the invention and without sacrifice ofits emciency for the purposes stated; and hence, I do not limit theinvention to the specific structure presented for purposes ofillustration, but reserve such modifications and variations as fallwithin the scope and purview of the appended claims.

I claim:

1. A gas burner, comprising a hollow-annular body member open at itstop, a cover plate seated on said body member, one of the meetingsurfaces of said body member and cover plate being radially channeled toform a ring of jet ducts, and the outer peripheral wall of said bodymember being formed with upwardly and outwardly inclined flutes mergingat their upper ends into the outer ends of said jet ducts, and means foruniting said body member and cover plate.

2. A gas burner, comprising a hollow annular body member open at itstop, a cover plate seated on said body member, one. of the meetingsurfaces of said body member and cover plate being radially channeled toform a ring of up wardly and outwardly inclined jet ducts, and the outerperipheral wall of said body member being formed with upwardly andoutwardly inclined flutes each merging into the-outer ends of aplurality of said jet ducts, and means for uniting said body member andcover plate.

3. A gas burner, comprising a hollow annular body member the outerperipheral wall of which is formed with an upwardly flared outersurface, a cover plate seated on said body member, the meeting surfacesof said body member and cover plate being tapered and one of them beingradially channeled to form a ring of upwardly and outwardly inclinedjetvducts, and the flared surface of said body member being formed withflutes merging at their upper ends at an acute angle into the outer endsof said jet ducts, and means for uniting said body member and coverplate.

4. A gas burner, comprising a hollow annular body member the outerperipheral wall of which is formed with an upwardly flared outersurface, a cover plate seated on said body member, the meeting surfacesof said body member and cover plate being tapered and one of them beingradially channeled to form a ring of upwardly and outwardly inclined jetducts, and the flared surface' of said body member being formed withflutes each merging at its upper end at an acute angle into the outerends of a plurality of said jet ducts, and means for uniting said bodymember and cover plate.

I JOHN C. ROGERS.

